MONACOR SPH-135/AD

• Sensitivity (1W, 1m, infinite baffle) SPL1W 87.4dB
• Frequency response 39 - 6000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 39Hz
• Mechanical quality factor QMS 3.40
• Electrical quality factor QES 0.42
• Total quality factor QTS 0.37

Large signal parameters

• Maximum linear excursion xmax 1.8mm
• Air volume displaced at xmax VD 17cm³
• Power handling P 40W
• Program power Pmax 60W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.5Ω
• Inductance (1kHz) LE 0.47mH
• VC Diameter 25.5mm
• Winding material Kapton

Magnet

• Force factor Bl 5N/A
• Motor constant Bl/√RE 2.13N/√W
• Diameter 100mm
• Weight 0.38kg

Diaphragm

• Effective diameter 110mm
• Effective area SD 95cm²
• Moving mass MMS 7.8g
• Moving mass (without air load) MMD 7.1g

Suspensions

• Stiffness KMS 0.467N/mm
• Compliance CMS 2140µm/N
• Equivalent volume to the compliance VAS 26L
• Mechanical resistance RMS 0.56N·s/m

Dimensions

• Nominal diameter 5.5″
• 135 x 135mm
• Overall size 135 x 135mm
• Baffle cutout diameter 121mm
• Overall depth 70mm
• Flange thickness 6mm
• Mounting depth 64mm
• Volume occupied by the driver (estimated) 0.33L
• Net weight 1.1kg